JC1+ by John Curl and Parasound The Halo JC 1+ is an uncompromising mono power amplifier that sets new standards in power and fidelity. With 450 watts at 8 Ω and 850 watts at 4 Ω, it delivers exceptional audio performance. The balanced XLR and unbalanced RCA inputs ensure compatibility with various audio sources. Its dual-mono design with two transformers provides exceptional channel separation and sonic accuracy. The direct-coupled design, without capacitors in the signal path, preserves signal integrity and enhances transparency. Experience unparalleled power and fidelity with the Halo JC 1+ mono power amplifier. All Features: Premier monaural amplifier Circuitry designed by legendary John Curl and CTC Builder Ultra-high bias Class A/AB operation Exclusive two position bias level adjustment Balanced inputs with discrete circuits and XLR connectors Vampire Direct gold-plated OFC RCA input Dual heavy-duty 24k gold-plated 5-way speaker binding posts Direct Coupled - no capacitors or inductors in signal path Complementary MOSFET driver stage and JFET input stage 18 beta-matched 15 amp, 60 MHz bipolar output transistors 1.9 kVA encapsulated toroid power transformer Independent power supplies for input, driver and output stages 18,000 μF filters for driver stage 132,000 µF Nichicon Gold Tune filters for output stage DC Servo and relay protection circuits REL and Nichicon Muse capacitors Harris hyper-fast soft recovery diodes for all bridge rectifiers Auto turn-on by 12v trigger or audio signal trigger Ground lift switch , adjustable turn-on delay 4u Chassis with rear carry handles, rack mounting kit included Premium detachable AWG 12 power cord with silver solder THX Ultra2 certified